PUA01CD48500V Carlo Gavazzi

PUA01CD48500V, Control Relays and Single-Phase Overvoltage Protection AC/DC - AC Overintensity Models DUA01, PUA01, PUA01CD48500V, Precise AC/DC Surge Control Relays. They can also be used as a single-phase or three-phase over-intensity control relay when connected to MI or MP type current transformers. Its interlocking function allows the relay output to be activated. The red LED indicates an alarm situation., PUA01CD48500V, The DUA01 and PUA01 equipment measure on AC and DC voltages. Connected to MI or MP current transformers (with a scale of 0.4 - 4 Vp) they can control single-phase or three-phase ac current currents up to 500 A. Example 1 (Terminals Z1, Y1 or 8, 9 interconnected - activated interlock function) The relay connects and is located in the working position when the measured value exceeds (or falls below) the pre-selected level. When the voltage drops at least 4% below the selected value (see hysteresis), the relay disconnects when opening the contact between the Z1, Y1 or 8, 9 terminals or when interrupting the supply voltage. Example 2 (MI CT) (No connection between terminals Z1, Y1 or 8, 9 ) The relay connects when the current through the power transformer exceeds the pre-selected level. Disconnect when the intensity drops at least 4% below the pre-selected level (see hysteresis) or when the supply voltage is interrupted. Example 3 (MP CT) (No connection between terminals Z1, Y1 or 8, 9 - interlock function off) The relay connects when the maximum current through the current transformer exceeds the pre-selected level. Disconnect when the maximum intensity drops at least 4% below the pre-selected level (see hysteresis) or when the supply voltage is interrupted.